How far is the distance of a light year? The distance of one light year was about 946 trillion kilometers. This value was estimated according to modern astronomy because the distance that light traveled in a year was about 365,250,000 kilometers. Therefore, the distance of one light year was equivalent to multiplying the distance between the Earth and the Sun by 365.25 million kilometers, then dividing the result by 1000, then multiplying the quotient by 1000, and then multiplying the remainder by 100. The quotient obtained was the distance mentioned in the novel.